VS
Name
—
PbMn³⁺O₂(OH)
Formula
—
Mineral Species
Entry type
—
Oxides & Hydroxides
Chemical class
—
Monoclinic
Crystal system
—
2.5
Mohs hardness
—
6.84
Specific gravity
—
Dark brownish gray
Streak
—
Metallic to adamantine
Luster
—
Perfect on {001}, nearly micaceous
Cleavage
—
P2/a
Space group
—
—
Structural group
—
Qns · Grandfathered
IMA
—
1925
Named in
—
Pitch-black; deep brown in transmitted light
Typical colors
—
Pb · Mn · O · H
Elements
—